a nose for something常用习语，作名词，字面意思“针对某事物的鼻子”，引申为“拥有某种能力，擅长发现某事物，擅长做某事”。

【例句】
As a passionate gourmet, she has always had a nose for a fine restaurant.
身为一个热爱美食的人，她总是能找到很棒的餐厅。

My granny has a nose for good bargains.
我奶奶很擅长捡便宜。